Determinants of female and male reproductive success in a simultaneous hermaphrodite land snail

Minoretti, Nicole; Schmera, Dénes; Kupfernagel, Sandra; Zschokke, Samuel; Armbruster, Georg F. J.; Beese, Kathleen; Baur, Anette; Baur, Bruno

doi:10.1016/j.anbehav.2011.06.026

Cited by 11 publications

(9 citation statements)

References 63 publications

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“…Under semi‐natural conditions, individuals of A. arbustorum mated between zero and three times within 58 days (Minoretti et al. ), which coincides well with the mating frequency (i.e., level of multiple paternity) that was found in the present study. There was more variance among snails in the minimum number of contributing sperm donors in early summer than in autumn.…”

Section: Discussionsupporting

confidence: 89%

“…), by an increased activity resulting in more copulations (Minoretti et al. ), or by manipulating sperm uptake through the shooting of darts into the soft body of the recipient (Rogers and Chase ; Nakadera and Koene ).…”

Section: Discussionmentioning

confidence: 99%

“…To which extent the higher fertilization success of certain sperm is a result of higher competitive ability of certain ejaculates or selection by the recipient (cryptic female choice) remains to be examined. It has been shown, however, that reproductive success can be influenced by several factors in simultaneously hermaphroditic snails, for example, by the mating order (Baur 1994a;Rogers and Chase 2002;Garefalaki et al 2010), by an increased activity resulting in more copulations (Minoretti et al 2011), or by manipulating sperm uptake through the shooting of darts into the soft body of the recipient (Rogers and Chase 2002;Nakadera and Koene 2013).…”

Section: Seasonal Patterns Of Multiple Paternitymentioning

confidence: 99%

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Seasonal effects on egg production and level of paternity in a natural population of a simultaneous hermaphrodite snail

Janssen

Baur

2015

Ecology and Evolution

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In a seasonal environment, the suitable time window for females to reproduce is restricted by both environmental conditions and the availability of males. In simultaneous hermaphrodites, which are female and male at the same time, selection on a trait that is solely beneficial for one sexual function cannot occur independently. Therefore, it is assumed that the optimal time window for reproduction is a compromise between the two sexual functions in simultaneous hermaphrodites, mediated by environmental conditions. We examined seasonal patterns of reproduction and the resulting paternity in a natural population of the simultaneously hermaphroditic land snail Arianta arbustorum. Adult and premature individuals (snails in a short protandric phase) were collected on four occasions over the entire active season. The snails were allowed to deposit eggs after which we assessed the level of paternity in their hatched offspring. Individuals mated throughout the reproductive season, whereas egg production – the major task of the female function – was restricted to the first half of the season. Snails collected in autumn were allowed to hibernate under laboratory conditions. As a result, we found that premature individuals began to mate late in the reproductive season, but did not start to produce eggs before emerging from hibernation. Our results demonstrate a temporal shift of reproductive activities; the egg production and oviposition occur mainly in the first half of the season, while sperm production and mating occur over the entire season. In subadult and adult snails, sperm obtained from several partners in the second part of the reproductive season are stored during hibernation for the fertilization of eggs in the successive years. These results extend our understanding of the influence of both natural and sexual selection on reproductive strategies in hermaphrodites.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Seasonal Patterns Of Multiple Paternitymentioning

confidence: 99%

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Seasonal effects on egg production and level of paternity in a natural population of a simultaneous hermaphrodite snail

Janssen

Baur

2015

Ecology and Evolution

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“…On one of these occasions we observed an egg laying site. Minoretti et al (2011) found that mating and reproductive success in Arianta arbustorum (Linnaeus, 1758) (Helicidae) are mainly determined by the activity of individual snails. It is unlikely that the distances travelled by T. mitchellae per night might show considerable seasonal variation due to a peak phase of reproduction, as the species occurs in a subtropical climate.…”

Section: Biotic Effects Homing Behavior and Retreat Sitesmentioning

confidence: 99%

“…Land snail activity (Bailey, 1981;Attia, 2004) is influenced by the condition of an individual snail (Minoretti et al, 2011), species requirements and climatic factors (Bailey, 1975;Cameron, 1992). The daily cycles of feeding and movement (Bailey, 1989a) and the effects of temperature and humidity on movement have usually been investigated under laboratory conditions (Abdel-Rehim, 1983) and are likely to differ in the natural environment (Staikou et al, 1989;Baur & Baur, 1993).…”

Section: Introductionmentioning

confidence: 99%